tutaj całkiem wyczerpująco o tym grzybie chaga zwanym królem, czyrem, ew. pozytywnym pasożytem:
https://oriveda.wordpress.com/chaga-the-facts/jest tam trochę o różnych chwytach reklamowych związanych z tym suplementem, z tego m. in. ciekawie o wpływie awarii w Fukushimie i rozkładzie skażenia :
(...) the Fukushima disaster. The American and Canadian supplement sellers that are spreading the rumors about Fukushima contamination are basing this on the concept that China and Siberia are ‘close’ to Japan. This is not relevant, though, as the picture below shows clearly. This picture shows the ground deposition of radioactive Caesium-137, less than one month after the Fukushima disaster took place. It speaks for itself: the Asian continent has almost no contamination with the exception of Russia’s Far East (and Japan of course), but the N-American continent is a different story.
http://cerea.enpc.fr/fukushima/media/cumulated_total_deposition_ground_fukushima-2.pngThe reason for this is that the major jet streams on Earth are westerly winds (flowing west to east). Radioactive fallout is carried away from the Asian continent by these jet streams towards the American continent, at a speed of > 100 miles/hour (160 km/hour).
Summarising, collecting and consuming wild Japanese, Canadian or American Chaga (or other mushrooms) is probably not a good idea in the affected areas, unless it has been tested for radio-active contamination. Chinese and Siberian Chaga is perfectly safe, though.
